The last week of February was when I was hit by a proverbial truck. Both feet went numb first. Then both hands. Over the course of three days that loss of sensation crept up into my shins, quads, and my entire left arm. Some refer to it as Novocain Numb. It wasn’t painful, but it scared me. I found myself trying to shake it out, as a runner does before a race to loosen up and get the blood flowing. I clenched my hands into fists and stretched them out again, just to be sure I still could.